National Instruments NI 6238 User Manual

Also see for DAQ M Series: User manual User manual User manual User manual User manual

Contents

National Instruments NI 6238 User Manual Manual pdf 10 page image

ContentsNI 6238/6239 User Manual x ni.comChapter 8PFIUsing PFI Terminals as Timing Input Signals .............................................................. 8-2Exporting Timing Output Signals Using PFI Terminals............................................... 8-3Using PFI Terminals as Static Digital Inputs and Outputs............................................ 8-3Connecting PFI Input Signals........................................................................................ 8-3PFI Filters ...................................................................................................................... 8-4I/O Protection ................................................................................................................ 8-5Programmable Power-Up States.................................................................................... 8-6Connecting Digital I/O Signals ..................................................................................... 8-6Chapter 9Isolation and Digital IsolatorsDigital Isolation ............................................................................................................. 9-2Benefits of an Isolated DAQ Device ............................................................................. 9-2Reducing Common-Mode Noise................................................................................... 9-3Chapter 10Digital Routing and Clock GenerationClock Routing................................................................................................................ 10-180 MHz Timebase........................................................................................... 10-220 MHz Timebase........................................................................................... 10-2100 kHz Timebase .......................................................................................... 10-2External Reference Clock ............................................................................... 10-210 MHz Reference Clock................................................................................ 10-3Synchronizing Multiple Devices ................................................................................... 10-3Real-Time System Integration Bus (RTSI) ................................................................... 10-3RTSI Connector Pinout ................................................................................... 10-4Using RTSI as Outputs ................................................................................... 10-5Using RTSI Terminals as Timing Input Signals ............................................. 10-6RTSI Filters..................................................................................................... 10-6PXI Clock and Trigger Signals...................................................................................... 10-7PXI_CLK10 .................................................................................................... 10-8PXI Triggers.................................................................................................... 10-8PXI_STAR Trigger ......................................................................................... 10-8PXI_STAR Filters........................................................................................... 10-8